Joint for gas-conduits



(No Moa'l.)

vNo. 376,917.

JQ'INTPDR GAS o oNDUlTs.

' Patented J JACOB scHINNEL LER., yor rrrrsnune, PENNSYLVANIA.

lol-NT,v Flon lens-Corvino:1 -s'.

SPECIFICATION forming part of Lett Application tiled July 23, yli'i.

1h all 1071,0712/1'6 may comzernf.-y

ers Patent No; 3

.I e it known thatl, Jlicoe Ec1-IrNNELLEn,a" citizen ofthe United States, residing at Pittsburg, in the cou'nty of l5 Pennsylvania, have in useful Improvements duits; and I'do hereby be a full, clear, and exact d invention, refe 1o panying draw vented certain new and in Joints for t GasCondeclare the following to rence being Vhad to the accomings, which form part ot' this specification.

This invention has relation to jointsor couplings for thepipes and conduits designed and adapted for the conveyance of natural gas.

The object ofthis invention is to provide af coupling which will notv only produce a ver close and impenetrable joint when first laid, but which will allow for the 'expansionand contraction of the conduit-sections in the di- 2o rection of'their length an'dwill permit the coupled sections to get out of alignmentV or move withoutr in any 'way impairingthe integrity of the joint or disturbing the proper yarrangements ot'its parts. 5 The couplings heretofore ein tems for conveyance of gas are, rule, very elicient when first applied, and under normal conditions will maintain thejoint andseams gas-tight. "hemhoweventhe pipes 5o begin to elongate or contract under differences of temperature, or the sections lose alignment, or the coupling parts are in any way disturbed, the seam will open and allow more or less gas i to escape. Henceit has been found necessary to incase the `joints -ol" natural-gas boxes provided with escape-pipes to take up andconvey to and above the surface any gas leaking from the joints.v

My invention consists in the provision of 4o coupling appliances ora coupling wherein the ends of the sections are separated a short distaxiec and are freeto expand and contract in the direction of their length, and also wherein the sections ma 'sag orget out of alignmentin 4'5 any direction without -impai ring the strength or tightness of the joint and without binding the parts of the `y'oint or sections at their points of contact with or inipingement against each other.

My invention furthermore consists in the novel construction, combination, and arrange'- ployed;v in ,sys-

as a general pipes in Allegheny and State of Fig escription of the h rings E ,E are in positio settling of the'pipe, as

'16.917, dazed January 24,1888. Serial No2-15,120. (o modrhl ent of paris, more fullyvdescrioeu nereinaff ter, and specificallyI `pointed out in the claim.

Referring tothe accompanying drawings, ure l is a sectional view ot the coupling o pipes, and Eig; 2 an end view of the same. y

A B designate the adjacent aving their ends inserted Wit C, which is of such a si closely around the ends yof* the same and has its interior slightly enlarged, as shown atrD,-v to permit of a certain amount of movement of the pipev ends outof alignment. The sleeve C is beveled or curved at its ends, as shown at c e, the purpose of more fully, E E designate tw flanges e e, beveled faces and beveled ends to permitthealignment. Theses ears pr lugs ff, having holesl'orthepassage ofthe bolts gg. Theseholes are made larger than the diameter of the bolts andare tapered to permit ofv play. 1

. HH are velastic rings or gaskets, the sidesof which are madeto t the ends of the sleeve. and to fit within the the inner faces of the rings E E and the outside edges of the collar. C. The inside diameteriof the rings is made somewhat smaller than the outside diameter of the pipe, .so that when expanded or x pipe 'said rings will hug thepipeclosely. y

'It will be of thef cond collar C and hin the sleeve ze as to tit the pipe o sleeves or rings having or 4curved on their inside pipesto sag or get out-'of the elastic rings H Hand flanged toward one another draw the two rings CAC rings H H,'for ming and compress the elastic a perfect joint betweenth of the elastic ringsaud the conduit-sections, an elasticity of the rings a certain amount ofpla ofthe sections will not impair the tightness-of the. joints. \Vhether'thi Y by expansion or contraction -of the metal or by shown in the drawings, there is suilicicnt space betweenl the rings tor collars E E to permit the exit-pipe to be tapped into lthe collar A, and

the outer surface of or rounded on their outer .A

spaces formed between e lower or innersides 1 pi pe-sections,

which will be explained` f leeves lare provided@ with stretched to lit overfthe seen thatwhen the adjacent ends g l l uit-section are placed within the d on account of y.the-f. 'n

s movement be caused in'practice this sfo'und" cial provision having been made to prevent binding under the lateral movement of the sections or parts of the coupling by reducing to be a very desirable point at which to tap l the conduit for service-pipes.

As will be understood, I use plain or unthreadedpipe in the practice of my invention, the contacting-surface of the collar metal rings 5 and hence am able to save material and exto a very narrow limit or width and bybcvelpense, as I can employ pipe of the least thielaing or rounding the surfaces to allow lor play ness necessary to withstand strain and pressnre. Vhen a joint requires threaded pipe, it is necessary to use pipe of extra thickness to allow of threads being cut without too much weakness of the pipe ends.

A. joint or` coupling constructed and applied 'according to my invention can be readily taken apart for repairslor examination or for making connections with branches or other lines, and as readily put together again when required. It is an economical joint, as the principal parts are simply castings, which can be ad- Vned to fit in poor movement of the sc'ctions ont of line.

That I claim asnew is- In a pipe-coupling, the combination, adjacent sections ing saidvsections and bearing thereon only at its edges ce, of thepacking H, and the sleeves E E, embracing the packing and internally and externally beveled, so as to present edges e e to the pipe-sections,snbstanti all y as described. In testimony that I claim the foregoing I have hereunto set my hand this 20th day of July, 1887.

with

justed and tightened or loose 2o sition. There is little or no danger of the joint getl ting out of order orof the parts binding, spel moon scIUSXnLLnn.

\Vitnesses: y j

LoUis Monsun, IG. S'ntUl-Fnin A B and sleeveO, embrac 

